Your district's HR department isn't there to protect you. It's there to protect your district. When push comes to shove, they're NOT going to advocate for you.

Your district's police/local police isn't there because YOU want them to be, they're there because the district pays them to be. They're not going to speak for you either.

In short - NO ONE else in this situation has YOUR vested interest in seeing the child held accountable for their actions.

THE ONLY person who is going to be advocating for you in this situation is YOU. And any lawyer who knows anything at all will tell you "a man who represents himself has a fool for a client."

Finally, YOU cannot press charges, only the police/district attorney can. You can make a formal complaint but the kid is thirteen years old - criminal charges are simply not going to happen unless you and your representatives push for them. And then you'll find your "admin support" vanishing like smoke in the wind, because you're raising the crime statistics in the campus and district and "giving the students a bad reputation" and "making a kid who made a mistake into a criminal" and everything else.

Call TCTA. Today. NOW. Lawyer up. You'll need it. Either (likely) charges won't be filed, but you'll need to have some on-campus consequence and protection in place from this girl, or (unlikely) charges WILL be filed and then the retaliation will start.

I've seen it way too many times in way too many situations in my career. Lawyer. Now.

(And FYI, TMEA is liability insurance, not legal protection. It'll pay your lawyer fees if there are any, if there is property damage or you're being sued. It won't help you find a lawyer.)

I am not a lawyer. This is not legal advice. Call one and get some.